Cisco Systems Catalyst 3550 Quick start guide

Brand: Cisco Systems

Model: Catalyst 3550

Category: Network switches

Type: Quick start guide

Cisco Systems Catalyst 3550 multilayer switch offers a powerful, flexible, and scalable networking solution for businesses of all sizes. With its advanced features and capabilities, this switch is ideal for a wide range of applications, including:

Enterprise networks: The Catalyst 3550 can be used to create a high-speed, reliable network infrastructure for businesses of all sizes.
Data centers: The Catalyst 3550 is a powerful and versatile data center switch that can provide high-performance connectivity for servers, storage, and other devices.

Enterprise networks: The Catalyst 3550 can be used to create a high-speed, reliable network infrastructure for businesses of all sizes.
Data centers: The Catalyst 3550 is a powerful and versatile data center switch that can provide high-performance connectivity for servers, storage, and other devices.

Getting Started Guide

Catalyst 3550 Multilayer Switch Getting Started Guide

INCLUDING LICENSE AND WARRANTY

1 About this Guide

2 Taking Out What You Need

3 Running Express Setup

4 Managing the Switch

5 Rack-Mounting

6 Connecting to DC Power

7 In Case of Difficulty

8 Obtaining Documentation

9 Obtaining Technical Assistance

10 Cisco Limited Lifetime Hardware Warranty Terms

1 About this Guide

This guide provides instructions on how to use Express Setup to initially configure your Catalyst

switch. Also covered are switch management options, basic rack-mounting procedures, port and

module connections, power connection procedures for both AC- and DC-powered switches, and

troubleshooting help.

For additional installation and configuration information, and technical specifications, refer to the

Catalyst 3550 documentation on Cisco.com. For system requirements, important notes, limitations,

open and resolved bugs, and last-minute documentation updates, see the release notes, also on

Cisco.com.

When using the online publications, refer to the documents that match the Cisco IOS software version

running on the switch. The software version is on the Cisco IOS label on the switch rear panel.

You can order printed copies of the manuals from the Cisco.com sites and from the telephone numbers

listed in the “Obtaining Documentation” section on page 23.

For translations of the warnings that appear in this publication, refer to the Regulatory Compliance

and Safety Information for the Catalyst 3550 Multilayer Switch that accompanies this guide.

2 Taking Out What You Need

Follow these steps:

1. Unpack and remove the switch and the accessory kit from the shipping box.

2. Return the packing material to the shipping container, and save it for future use.

3. Verify that you have received the items shown on page 3. If any item is missing or damaged,

contact your Cisco representative or reseller for instructions. Some switch models might include

additional items that are not shown on page 3.

Equipment That You Supply to Run Express Setup

You need to supply this equipment to run Express Setup:

• PC

• Ethernet (Category 5) straight-through cable (as shown)

Shipping Box Contents

Regulatory Compliance

and Safety Information

for the

Catalyst 3550 Switch

Getting Started Guide

Cisco

Product Ownership

Registration card

Catalyst 3550 switch

Console cable

Two 19-inch

mounting brackets

Two 19-inch

mounting brackets

Four number-12 Phillips machine screws

Four number-8 Phillips truss-head screws

Six number-8 Phillips flat-head screws

Four rubber mounting feet

AC power cord (AC-powered switches only)

Connector cover for redundant

power system (RPS)

Two number-4 pan-head screws

Cable guide

One black Phillips machine screw

Documentation

Ground lug

(DC-powered switches only)

Two number-10-32 screws

Terminal block

(DC-powered switches only)

Catalyst 3550

3 Running Express Setup

When you first set up the switch, you should use Express Setup to enter the initial IP information. This

enables the switch to connect to local routers and the Internet. You can then access the switch through

the IP address for further configuration.

To run Express Setup:

Step 1

Verify that no devices are connected to the switch, because during Express Setup, the

switch acts as a DHCP server. If your PC has a static IP address, before you begin you

should change your PC settings to temporarily use DHCP.

Step 2

Connect the AC power cord to the switch and to a grounded AC outlet. The power-on

self-test (POST) begins. During POST, the LEDs blink while a series of tests verify that the

switch functions properly.

For a DC-powered switch, see the “Connecting to DC Power” section on page 17 for

wiring instructions.

Step 3

Wait for the switch to complete POST. It might take several minutes for the switch to

complete POST.

Step 4

Verify that POST has completed by confirming that the SYST and STAT LEDs are green.

Step 5

Press and hold the Mode button for

3 seconds. When all of the LEDs

above the Mode button turn green,

release the Mode button.

If the LEDs above the Mode button

begin to blink after you press the

button, release it. Blinking LEDs

mean that the switch has already

been configured and cannot go into

Express Setup mode. For more

information, see the “Resetting the

Switch” section on page 21.

Step 6

Verify that the switch is in Express Setup mode by confirming that all LEDs above the

Mode button are green. (The RPS LED remains off on some switch models.)

Mode button

Step 7

Connect a straight-through

Category 5 Ethernet cable (not

provided) to any 10/100 or

10/100/1000 Ethernet port on the

switch front panel and to the

Ethernet port on the PC.

Step 8

Verify that the LEDs on both Ethernet ports are green.

Step 9

Wait 30 seconds.

Step 10

Launch a web browser on your PC.

Enter the IP address 10.0.0.1 in the

web browser, and press Enter.

Step 11

The Express Setup page appears. If it does not appear, see the “In Case of Difficulty”

section on page 20 for help.

ata

st 3

DHCP-enabled PC

Step 12

Enter this information in the Network Settings fields:

• In the Management Interface (VLAN ID) field, the default is 1. Enter a new VLAN ID

only if you want to change the management interface through which you manage the

switch and to which you assign IP information. The VLAN ID range is 1 to 1001.

• In the IP Address field, enter the IP address of the switch. In the IP Subnet Mask field,

click the drop-down arrow, and select an IP Subnet Mask.

• In the Default Gateway field, enter the IP address for the default gateway (router).

• Enter your password in the Switch Password field. The password can be from 1 to 25

alphanumeric characters, can start with a number, is case sensitive, allows embedded

spaces, but does not allow spaces at the beginning or end. In the Confirm Switch

Password field, enter your password again.

Step 13

(Optional) You can enter the Optional Settings information now or enter it later by using

the device manager interface:

• In the Host Name field, enter a name for the switch. The host name is limited to 31

characters; embedded spaces are not allowed.

• In the System Contact field, enter the name of the person responsible for the switch.

In the System Location field, enter the wiring closet, floor, or building where the

switch is located.

• In the Telnet Access field, click Enable if you are going to use Telnet to manage the

switch by using the command-line interface (CLI). If you enable Telnet access, you

must enter a Telnet password.

• In the Telnet Password field, enter a password. The Telnet password can be from 1 to

25 alphanumeric characters, is case sensitive, allows embedded spaces, but does not

allow spaces at the beginning or end. In the Confirm Telnet Password field, enter the

Telnet password again.

• In the SNMP field, click Enable to enable Simple Network Management Protocol

(SNMP). Enable SNMP only if you plan to manage switches by using

CiscoWorks2000 or another SNMP-based network-management system.

If you enable SNMP, you must enter a community string in the SNMP Read

Community field, the SNMP Write Community field, or both. SNMP community

strings authenticate access to MIB objects. Embedded spaces are not allowed in SNMP

community strings. When you set the SNMP read community, you can access SNMP

information, but cannot modify it. When set the SNMP write community, you can

access and modify SNMP information.

Refreshing the PC IP Address

After you complete Express Setup, you should refresh the PC IP address.

For a dynamically assigned IP address, disconnect the PC from the switch, and reconnect it to the

network. The network DHCP server will assign a new IP address to the PC.

For a statically assigned IP address, change it to the previously configured IP address.

4 Managing the Switch

After completing Express Setup and installing the switch in your network, use the device manager or

other management options described in this section for further configuration.

Using the Device Manager

The simplest way to manage the switch is by using the device manager that is in the switch memory.

This is an easy-to-use web interface that offers quick configuration and monitoring. You can access

the device manager from anywhere in your network through a web browser.

Follow these steps:

1. Launch a web browser on your PC or workstation.

2. Enter the switch IP address in the web browser, and press Enter. The device manager page appears.

3. Use the device manager to perform basic switch configuration and monitoring. Refer to the device

manager online help for more information.

4. For more advanced configuration, download and run the Cisco Network Assistant described in

the next section.

Step 14

Click Submit to save your settings, or click Cancel to clear your settings.

When you click Submit, the switch is configured and exits Express Setup mode. The PC

displays a warning message and then attempts to connect with the new switch IP address.

If you configured the switch with an IP address that is in a different subnet from the PC,

connectivity between the PC and the switch is lost.

Step 15

Disconnect the switch from the PC, and install the switch in your production network. See

the “Managing the Switch” section on page 7 for information about configuring and

managing the switch.

If you need to rerun Express Setup, see the “Resetting the Switch” section on page 21.

Downloading Cisco Network Assistant

Cisco Network Assistant is a free software program that you download from Cisco.com and run on

your PC. Network Assistant offers advanced options for configuring and monitoring multiple devices,

including switches, switch clusters, switch stacks, routers, and access points.

Follow these steps:

1. From the device manager page, select Network Assistant.

2. Follow the instructions to download the program to your PC.

3. Use the Network Assistant to configure and monitor multiple switches and devices. Refer to the

Network Assistant online help and the getting started guide for more information.

Command-Line Interface

You can enter Cisco IOS commands and parameters through the CLI. Access the CLI either by

connecting your PC directly to the switch console port or through a Telnet session from a remote PC

or workstation.

Follow these steps:

1. Connect the supplied RJ-45-to DB-9 adapter cable to the standard 9-pin serial port on the PC.

Connect the other end of the cable to the console port on the switch.

2. Start a terminal-emulation program on the PC.

3. Configure the PC terminal emulation software for 9600 baud, 8 data bits, no parity, 1 stop bit,

and no flow control.

4. Use the CLI to enter commands to configure the switch. Refer to the software configuration guide

and the command reference for more information.

Other Management Options

You can use SNMP management applications such as CiscoWorks Small Network Management

Solution (SNMS) and HP OpenView to configure and manage the switch. You also can manage it from

an SNMP-compatible workstation that is running platforms such as HP OpenView or SunNet

Manager.

The Cisco IE2100 Series Configuration Registrar is a network management device that works with

embedded CNS agents in the switch software. You can use IE2100 to automate initial configurations

and configuration updates on the switch.

See the “Accessing Help Online” section on page 21 for a list of supporting documentation.

5 Rack-Mounting

This section covers basic 19-inch rack-mounting and switch port connections. The illustrations in this

section show the Catalyst 3550-12T and 3550-24 switch for examples. You can install and connect

other Catalyst 3550 switches as shown in these illustrations. For alternate mounting procedures, such

as installing the switch in a 24-inch rack or on a wall, and for additional cabling information, refer to

the Catalyst 3550 Multilayer Switch Hardware Installation Guide on Cisco.com.

Equipment That You Supply

You need to supply a number-2 Phillips screwdriver to rack-mount the switch.

Before you Begin

When determining where to install the switch, verify that these guidelines are met:

• Airflow around the switch and through the

vents is unrestricted.

• Temperature around the switch does not

exceed 113°F (45°C).

• Humidity around the switch does not exceed

85 percent.

• Altitude at the installation site is not greater

than 10,000 feet (3049 m).

• Clearance to the switch front and rear panels

meets these conditions:

–

Front-panel LEDs can be easily read.

–

Access to ports is sufficient for

unrestricted cabling.

–

AC power cord can reach from the AC

power outlet to the connector on the

switch rear panel.

–

DC source wires can reach from the

circuit breaker to the terminal block plug

on the switch rear panel.

• Cabling is away from sources of electrical

noise, such as radios, power lines, and

fluorescent lighting fixtures.

• For 10/100 ports and 10/100/1000 ports, the

cable length from a switch to an attached

device cannot exceed 328 feet (100 meters).

• For 100BASE-FX ports, the cable length from

a switch to an attached device cannot exceed

6562 feet (2 kilometers).

• For cable lengths for Gigabit Interface

Converter (GBIC) modules, refer to the

documentation that shipped with the module.

Installation Warning Statements

This section includes the basic installation warning statements.

Warning

To prevent the switch from overheating, do not operate it in an area that exceeds the

maximum recommended ambient temperature of 113°F (45°C). To prevent airflow

restriction, allow at least 3 inches (7.6 cm) of clearance around the ventilation openings.

Statement 17B

Warning

This equipment is intended to be grounded. Ensure that the host is connected to earth

ground during normal use.

Statement 39

Warning

Only trained and qualified personnel should be allowed to install, replace, or service

this equipment.

Statement 1030

Warning

If a redundant power system (RPS) is not connected to the switch, install an RPS

connector cover on the back of the switch.

Statement 265

Warning

Class 1 laser product.

Statement 1008

Warning

To prevent bodily injury when mounting or servicing this unit in a rack, you must take

special precautions to ensure that the system remains stable. The following guidelines

are provided to ensure your safety:

• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with

the heaviest component at the bottom of the rack.

• If the rack is provided with stabilizing devices, install the stabilizers before mounting or

servicing the unit in the rack.

Statement 1006

Warning

Installation of the equipment must comply with local and national electrical codes.

Statement 1074

Warning Statements for Connecting to DC Power

These statements apply when connecting a Catalyst 3550-24-DC switch to DC power.

Warning

When installing the unit, always make the ground connection first and disconnect it last.

Statement 42

Warning

An exposed wire lead from a DC-input power source can conduct harmful levels of

electricity. Be sure that no exposed portion of the DC-input power source wire extends

from the terminal block plug.

Statement 122

Warning

Before connecting or disconnecting ground or power wires to the chassis, ensure that

power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit

breaker on the panel board that services the DC circuit, switch the circuit breaker to the

OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Statement 140

Caution To make sure that the equipment is reliably connected to earth ground, follow the

grounding procedure instructions, and use a UL-listed lug suitable for number-6 AWG

wire and two number-10-32 ground-lug screws.

Caution You must connect the Catalyst 3550-24-DC switch only to a DC-input power source that

has an input supply voltage from –36 to –72 VDC. If the supply voltage is not in this

range, the switch might not operate properly or might be damaged.

Caution The switch must be installed with 5-A branch-circuit protection.

Attaching the Brackets

Use four Phillips flat-head screws to attach the long side of the brackets on the Catalyst 3550-12

switches.

Number-8 Phillips

flat-head screws

Catalyst 3550

100-240V~

5-3A

50/60Hz

DC OUTPUT 1

NSO

Front-mounting position

Mid-mounting position (telco rack)

Rear-mounting position

Attaching the Brackets

Use six Phillips flat-head screws to attach the long side of the brackets on the Catalyst 3550-24 and

3550-48 switches.

Number-8 Phillips

flat-head screws

MOD

Catalyst 3550

SYSTEM

17X

18X

33X

34X

15X

16X

31X

32X

47X

48X

RPS

STATUS

UTIL

DUPLX

SPEED

MOD

Catalyst 3550

SYSTEM

17X

18X

33X

34X

15X

16X

31X

32X

47X

48X

RPS

STATUS

UTIL

DUPLX

SPEED

100-240V~

5-3A

50/60Hz

DC OUTPUT 1

CONSOLE

Front-mounting position

Mid-mounting position (telco rack)

Rear-mounting position

Rack-Mount the Switch

Use the black Phillips machine screw to attach the cable guide to the left or right bracket. Use the four

number-12 Phillips machine screws to attach the brackets to the rack.

Cable

guide

Front-mounting position

Mid-mounting position

(telco rack)

Rear-mounting position

Black Phillips

machine screw

Number-12 Phillips

machine screws

Catalyst 3550

SERIES

Catalyst 3550

SERIES

100-240V~

5-3A

50/60Hz

DC OUTPUT 1

CONSOLE

Connect to the Switch Ports

This section describes how to connect to the fixed switch ports and to the GBIC module ports.

Connect to 10/100 and 10/100/1000 Ports

Follow these steps:

Warning

Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if

interconnections are made using uninsulated exposed metal contacts, conductors, or

terminals. Avoid using such interconnection methods, unless the exposed metal parts

are located within a restricted access location and users and service people who are

authorized within the restricted access location are made aware of the hazard. A

restricted access area can be accessed only through the use of a special tool, lock and

key or other means of security.

Statement 1072

Step 1

When you connect to servers,

workstations, IP phones, wireless

access points, and routers, insert a

straight-through, twisted four-pair,

Category 5 cable in a switch

10/100

or 10/100/1000 port. Use a

crossover, twisted four-pair,

Category 5 cable when you connect

to other switches, hubs, or

repeaters.

1. The Catalyst 3550-24PWR switch 10/100 inline power ports, also referred to as pre-standard Power over

Ethernet (PoE) ports, provide –48 VDC power and protocol support for Cisco IP Phones and Cisco Aironet

Access points. See the hardware installation guide on Cisco.com for more information about PoE ports.

Step 2

Insert the other cable end into an RJ-45 connector on the other device.

MODE

SYSTEM

11X

12X

RPS

STATUS

UTIL

DUPLX

SPEED

10/100 or 10/100/1000 ports

Connect to 100BASE-FX Ports

Follow these steps:

Install and Connect to GBIC Module Ports

Follow these steps:

For a list of supported modules, refer to the release notes on Cisco.com. For detailed instructions on

installing and removing modules, refer to the documentation that came with the GBIC module.

Step 1

Remove the dust plugs from the

100BASE-FX ports and the rubber

caps from the MT-RJ patch cable.

Store them for future use.

Step 2

Insert an appropriate cable into a 100BASE-FX port. Insert the other cable end into an SC

or ST port on the other device.

Step 1

Grasp the module on the sides, and

insert it into the switch slot until you

feel the connector snap into place.

Step 2

Insert an appropriate cable into the

module port. Insert the other cable end

into the other device.

TEM

S TAT U

TIL

2X 3X

100BASE-FX ports

GBIC module

GBIC module port

After you connect to the switch port, the port LED turns amber while the switch establishes a link.

This process takes about 30 seconds, and then the LED turns green when the switch and the target

device have an established link. If the LED is off, the target device might not be turned on, there might

be a cable problem, or there might be a problem with the adapter installed in the target device. See the

“In Case of Difficulty” section on page 20 for information about online assistance.

6 Connecting to DC Power

To connect the Catalyst 3550-24-DC switch to a DC-input power source, follow the steps in this

section.

Equipment That You Supply

You need to supply these tools and equipment:

• Ratcheting Phillips-head torque screwdriver

• Panduit crimping tool

• 6-gauge copper ground wire

• Four leads of 18-gauge copper wire

• Wire stripping tool

Ground the Switch

Follow these steps:

Step 1

Remove the ground lug and the two number-10-32 screws from the rear panel of the switch.

Step 2

If your 6-gauge ground wire is insulated,

strip it to 0.5 inch (12.7 mm).

0.5 inch (12.7 mm)

Wiring the DC Input Power Source

Follow these steps:

Step 3

Slide the exposed area of the 6-gauge wire

into the ground lug, and use the crimping

tool to crimp the lug to the wire.

Step 4

Using the ratcheting screwdriver, torque the ground lug screws to 15 lbf-in. (240

ounce-force inches [ozf-in.]) to attach the ground lug to the switch.

Step 1

On the terminal block connector, identify the positive and negative feed positions.

Step 2

Strip each of the four wires coming from the

DC power source to 0.27 inch (6.6 mm)

± 0.02 inch (0.5 mm). Do not strip more

than the recommended amount of wire.

Step 3

Insert the four exposed wires from the DC-input power source into the terminal block plug,

matching positive to positive and negative to negative for both the A and the B feed wires.

0.27 inch (6.6 mm)

Caution You must connect the Catalyst 3550-24-DC switch only to a DC-input power source that

has an input supply voltage from –36 to –72 VDC. If the supply voltage is not in this

range, the switch might not operate properly or might be damaged.

Step 4

Using the ratcheting torque screwdriver,

torque each terminal block captive screw

(above the installed wire leads) to 4.5 lbf-in.

(72 ozf-in.).

Step 5

Insert the terminal block plug in the terminal

block header on the rear panel of the switch.

Step 6

Move the circuit-breaker handle for the DC power source to the on position.

Return

Negative

Return

Negative

Feed A

Feed B

36 - 72V

1 - 0.5A

7 In Case of Difficulty

If you experience difficulty, help is available here and on Cisco.com. This section includes Express

Setup troubleshooting, how to reset the switch, how to access help online, and where to find more

information.

Troubleshooting Express Setup

If Express Setup does not run, or if the Express Setup page does not appear in your browser:

• Did you verify that POST successfully ran

before starting Express Setup?

If not, make sure that only the SYST and STAT

LEDs are green before pressing the Mode button

to enter the Express Setup mode.

• Did you press the Mode button while the

switch was still running POST?

If yes, wait until POST completes. Power cycle the

switch. Wait until POST completes. Confirm that

the SYST and STAT LEDs are green. Press the

Mode button to enter Express Setup mode.

• Did you try to continue without confirming

that the switch was in Express Setup mode?

Verify that all LEDs above the Mode button are

green. (The RPS LED is off.) If necessary, press

the Mode button to enter Express Setup mode.

• Does your PC have a static IP address? If yes, before connecting to the switch change

your PC settings to temporarily use DHCP.

• Did you connect a crossover cable instead of

a straight-through Ethernet cable between a

switch port and the Ethernet port of the PC?

If yes, connect a straight-through cable to an

Ethernet port on the switch and PC. Wait 30

seconds before entering 10.0.0.1 in the browser.

• Did you connect the Ethernet cable to the

console port instead of to a 10/100 or

10/100/1000 Ethernet port on the switch?

If yes, disconnect from the console port. Connect

to an Ethernet port on the switch and PC. Wait 30

seconds before entering 10.0.0.1 in the browser.

• Did you wait 30 seconds after connecting the

switch and PC before entering the IP address

in your browser?

If not, wait 30 seconds, re-enter 10.0.0.1 in the

browser, and press Enter.

• Did you enter the wrong address in the

browser, or is there an error message?

If yes, re-enter 10.0.0.1 in the browser, and press

Enter.

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Cisco Systems Catalyst 3550 Quick start guide

Brand: Cisco Systems

Model: Catalyst 3550

Category: Network switches

Type: Quick start guide

Enterprise networks: The Catalyst 3550 can be used to create a high-speed, reliable network infrastructure for businesses of all sizes.
Data centers: The Catalyst 3550 is a powerful and versatile data center switch that can provide high-performance connectivity for servers, storage, and other devices.

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Cisco Systems Catalyst 3550 Quick start guide

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